Boil the potatoes with their skins on until they can be pierced easily with a knife. Peel off the skins with a knife and thinly slice.

Wash and trim the green beans and cook in boiling salted water until just tender. Drain and set aside.

Boil the pasta in salted water until al dente, firm to the bite. Drain, reserving some of the cooking water.

Toss pasta with the pesto sauce until thoroughly combined adding a few spoons of reserved cooking water so it is the desired consistency.

Gently toss in potatoes and green beans.

Serve immediately.